WOW - Hippopotamus Milk is Pink in Color

Lehren

Hippopotamus produces two unique skin secretions (so unique they're named after the animal), "hipposudoric acid" and its analog "norhipposudoric acid". It gives the hippos' sweat a red coloration, commonly believed to be blood (it's not). The acids act as a sunscreen and antimicrobial. The pink coloration is the mixture of these pigmented excretions and the white mammalian milk.